Today I dropped the oil pan and began inspecting and adjusting shims on the main bearings. I started with the rear bearing. It actually looked pretty alright. I used some plastigauge on it with two shims in place. Around 0.015. Moved on to the center bearing. Took a while to figure out how to drop the oil pump so the bearing cap could drop. (learned that if you take the 3 screws off the plate it's possible to have the whole pump fall apart, vanes and a little tiny spring will go zooming all over the place...luckily we had another to compare to when putting back together) Dropped the center bearing cap and found this....There were no shims on the cap. Looks like this is a bit beyond a home repair...Put everything back together. Now back to drawing board.
